90 Degree Reflector UFO High Bay Light

This is a UFO high bay, the round industrial fitting that hangs above open floor space and throws its light straight down. The 90 degree figure in the name is the beam angle, and it is the thing worth understanding before you buy. A 90 degree cone spreads to a circle roughly twice as wide as the mounting height, so a fitting hung six metres up covers a patch around twelve metres across at floor level. Narrower optics concentrate light into a smaller, brighter pool; wider ones wash more of the floor at a lower intensity.

That makes it a working light rather than a decorative one. It suits warehouse aisles, storage units, workshops, garages, barns and any high roofed space where the ceiling sits too far away for an ordinary pendant to be much use. Mounting height is the number to settle first, because a high bay hung too low gives glare and a hard edge to the lit area, while one hung too high spreads thin. Fittings of this type are usually set out in a grid rather than a line, so the pools overlap and the shadows between racking and benches even out.

The photograph shows a black finned upper housing sitting above a wide silver reflector dome, with a chain and a black flexible cable running from the top for suspension and supply. Those fins are the heat sink: every LED fitting sheds its heat through the body, so leaving air free to move around the top of one matters more than any cleaning routine. Give the inside of the reflector an occasional wipe once the fitting is isolated and cool, because dust on a reflective surface costs you light before anything else does. Installation and wiring are work for a qualified electrician.

What does the 90 degree reflector actually change?

It sets how wide the light spreads. A 90 degree cone lights a circle about twice as wide as the mounting height, so the beam stays fairly contained rather than washing the walls.

What wattage and light output does it give?

The manufacturer does not publish a wattage or a lumen figure for this listing, so we are not going to print one. Ask us and we will get the figures confirmed before you order.

Is it dimmable?

Neither the specification nor the packaging says. Until the manufacturer confirms it, plan the installation on the basis that no dimming control is supported.

Does it carry an IP rating?

No IP rating is stated by the manufacturer, so treat it as unrated and keep it to dry, sheltered indoor spaces well away from water, damp and washdown areas.

How does it hang?

The photograph shows a chain suspension with a separate flexible supply cable running from the top of the housing, which is the usual arrangement for hanging a high bay from a roof fixing.

How high should it be mounted?

That depends on the output, which is not stated here. As a rule the beam geometry means every extra metre of height doubles the lit width but thins the light reaching the floor.